Custom made Connector Seal Rubber Plug

A Connector Seal Rubber Plug can be developed to close an unused opening in a connector arrangement. The plug must suit the actual cavity geometry and retention method, including any rear cover or secondary feature that controls its final position. A small difference in seating depth can affect whether the surrounding connector closes correctly.

Custom structure, material, size, hardness and color options allow the part to be matched to the connector. Check whether assembly requires insertion from the front or rear and whether the plug remains accessible afterward. Its position should be stable through the connector's normal handling and mating sequence.

Sealing performance needs assessment with the complete connector and intended exposure conditions. Keep the cavity clean before insertion, and avoid nicking the rubber with a sharp probe. If a previously unused position is later populated, remove the plug using a method that preserves the cavity and neighboring seals. During inspection, look for a plug that sits noticeably higher or lower than the intended position, rather than judging the assembly by color alone.

Material options

Rubber compound options, customized alongside the profile and contact conditions.

Hardness selection

Solid rubber options: 30–90 Shore A. Custom structure, material, size, hardness and color options allow the part to be matched to the connector.

Custom geometry

A small difference in seating depth can affect whether the surrounding connector closes correctly.

Fit evaluation

Check whether assembly requires insertion from the front or rear and whether the plug remains accessible afterward.

Color & OEM

Custom colors; identification clear of connectors and removal features.

Photos illustrate structure or material appearance only. A Connector Seal Rubber Plug can be developed to close an unused opening in a connector arrangement. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.